S2000 Under The Hood S2000 Technical and Mechanical discussions.

Front subframe bolts cross threaded

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Old Jun 18, 2019 | 01:22 PM
  #11  
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Originally Posted by engifineer
You are not even supposed to reuse the bolts at all once loosened per Honda (although most of us do when doing the clutch or other jobs that require loosening them). But I would for sure not drive around with 2 of them missing. Not only can cause slippage of alignment, but also impacts how the car reacts to a front end collision. The subframe and its fasteners most times are key portions of the crumple zones and how they collapse during a crash.
Interestingly there was a member here by the name or AE_Racer that drove and tracked his car for 100,000 miles without the two front subframe bolts entirely (1 on each side).
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Old Jun 18, 2019 | 01:27 PM
  #12  
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Originally Posted by Soviet
Interestingly there was a member here by the name or AE_Racer that drove and tracked his car for 100,000 miles without the two front subframe bolts entirely (1 on each side).
I'm sure some have. But still not a great idea
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Old Jun 18, 2019 | 04:44 PM
  #13  
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People cross the street fully absorbed in their phone and don't get hit by a car. People smoke for decades and never get cancer. People refuse to properly torque their uniquely designed oil filters and their engine suffers no catastrophe.

Just because there is one outlier without a negative outcome doesn't make something risky and dumb into something benign.
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Old Jun 19, 2019 | 04:10 AM
  #14  
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Soviet, how many threads are affected?

You can take a grinder, and taper out the first 10-15% of threads, clearing a path for a tap or the bolt.
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Old Jun 19, 2019 | 05:09 AM
  #15  
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Originally Posted by noodels
When I were a lad many many years ago..
anyway.....
get a oem bolt,cut grooves in like a tap tool,with plenty of oil ect ect..and use that to clean it all up
This here.
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Old Jun 19, 2019 | 09:19 AM
  #16  
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Originally Posted by Billman250
Soviet, how many threads are affected?

You can take a grinder, and taper out the first 10-15% of threads, clearing a path for a tap or the bolt.
No idea but I may be able to give this a shot this weekend. I have several spare subframe bolts laying around from partouts.
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Old Jun 19, 2019 | 06:05 PM
  #17  
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Originally Posted by noodels
When I were a lad many many years ago..
anyway.....
get a oem bolt,cut grooves in like a tap tool,with plenty of oil ect ect..and use that to clean it all up
Yup we use this method at the factory for many applications. Works like a charm.
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Old Apr 11, 2020 | 05:46 PM
  #18  
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Didn't get around to try this out until today when I decided to install some used rigid collars I got from a car I parted out.

You guys are absolutely brilliant! After running the custom tap through the bolts went in like butter. They torqued down no problem.





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